- Many of these regions also suffer from epidemics of other infectious diseases such as cholera and malaria.
- Vibrio vulnificus is a bacterium in the same family as those that cause cholera.
- Pasteur went on to discover vaccinations for chicken pox, cholera, diphtheria, anthrax and rabies.
melancholy from Middle English:
According to the medieval theory of the four humours ( see humour), melancholy or black bile caused depression. The word goes back to Greek melankholia, from melas ‘black’ (source of mid 19th-century melanin and melanoma) and kholē ‘bile’ (source of cholera (Late Middle English), choleric (Middle English), and cholesterol (late 19th century)). Today it tends to refer to a pensive or moody sadness rather than deep depression.
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